WO2006060987A1 - Two-piece piston for an internal combustion engine - Google Patents
Two-piece piston for an internal combustion engine Download PDFInfo
- Publication number
- WO2006060987A1 WO2006060987A1 PCT/DE2005/002137 DE2005002137W WO2006060987A1 WO 2006060987 A1 WO2006060987 A1 WO 2006060987A1 DE 2005002137 W DE2005002137 W DE 2005002137W WO 2006060987 A1 WO2006060987 A1 WO 2006060987A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- projections
- facing away
- opening
- cylindrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
Definitions
- the invention relates to a two-part piston for an internal combustion engine according to the preamble of claim 1.
- FIG. 1 shows a two-part piston with an upper part in section, which is connected via a first embodiment of the rotary closure according to the invention with a lower part of the piston,
- FIG. 2 is a section along the line INI in FIG. 1, showing a plan view of an opening forming part of the rotary closure.
- Fig. 3 shows the two-part piston in section, in which the upper part and the lower part are connected to each other via a further embodiment of the rotary closure, and
- Fig. 4 is a partial section through the upper part and the lower part of the piston, showing the opening in the piston lower part, which is part of the rotary closure.
- Fig. 1 shows in a consisting of two halves Schitt picture whose left half in the direction of the piston pin axis 12 and the right half is perpendicular thereto, a two-part, cooled piston 1, which consists of a piston upper part 2 with a piston head 13 and a piston lower part 6 ,
- the upper piston part 2 has a combustion bowl 3 formed in the piston head 13 and, on its radial outer side, an annular wall 4 with a ring part 5.
- the lower piston part 6 comprises a box-shaped piston shaft 7 and two pin bosses 8 connected thereto, each with a pin bore 9 for receiving a piston pin, not shown in the figures.
- the piston lower part 6 is delimited by a partition wall 14, which has a thin-walled and elastically yielding partition wall region 14 'close to the piston axis 15, into which a centrally disposed opening 16 is introduced, which is an element of a rotary closure which connects the upper piston part 2 with the lower piston part 6.
- annular support rib 17 is limited, which forms an annular support 18 for the piston upper part 2.
- the piston bottom facing away from the bottom of the outer cooling channel 10 may, as shown in the left half of the sectional view of FIG. 1, be closed by an integrally formed on the support rib 17, circumferential disc-shaped cover 19.
- an annular plate spring 20 can be used, which is mounted under prestress with its radial inner side on a on the radial outer side of the support rib 17, circulating support 21 and rests with its radial outer side in a recess 22 which is formed in the piston bottom 13 facing away from the end face 23 of the annular wall 4.
- Both the cover 19 and the plate spring 20 have in the figures, not shown ⁇ lzu- and oil drain holes on the cooling oil in the cooling channel 10, 10 'on and is derived again.
- the upper side of the cooling channel 10 may have cooling fins 25, as shown in the left half of the sectional view. Furthermore, it is possible to improve the cooling effect of flowing through the cooling channel 10 'cooling oil, characterized in that in the top of the cooling channel 10' holes 26 are introduced, as the right half of the sectional view of FIG. 1 shows.
- the support rib 17 is adjoined by an inner cooling channel 11, the upper side of which is from the piston bottom 13 and the underside of the partition wall region 14 'are formed.
- the inner cooling channel 1 1 of the support rib 17 and radially inwardly of a coaxial with the piston axis 15 lying, cylindrical Anformung 24 is limited, which is integrally formed on the underside of the piston head 13.
- overflow channels are arranged, via which the cooling oil is passed from the outer into the inner cooling channel.
- the cooling oil located in the inner cooling channel 1 1 is discharged through the opening 16 in the piston interior.
- FIG. 1 shows a plan view of the opening 16 formed in the partition wall region 14 ', which, as also indicated in FIG. 1, has two mutually opposite recesses 30. Shown are also the cylindrical Anformung 24 in section and the piston bottom-mounted end of the Anformung 24 arranged hook-shaped projections 27 partly in plan view and partly dashed. In Fig. 2, these are located in a position in which they engage behind the edge of the opening 16.
- both parts 2, 6 When mounting the upper piston part 2 on the lower piston part 6, both parts 2, 6 have a position to each other, in which the hook-shaped projections 27 are rotated by 90 ° relative to the position shown in FIG.
- Fig. 3 shows a further embodiment of the rotary closure, wherein at the end facing away from the piston bottom 13 of the cylindrical Anformung 24 two opposing projections 28 'are mounted, which are formed by a dowel pin 28 in a through hole in the spherical end 24' of cylindrical Anformung 24 is arranged and the projections 28 'forming on both sides protrudes beyond the bore.
- the projections 28 ' engage behind the edge of the opening 16 when the piston 1 is fully assembled. Because of the selected form of representation, in which the right half of FIG. 3 shows a section which is perpendicular to the half-section of the left half of Fig. 3, in the left half of Fig. 3, the dowel pin 28 in side view and in the right half of Fig. 3 shown in cross section.
- the opening 16 shows, in an enlarged partial section, the opening 16, the lower edge of which is designed as a guide 29 for the projections 27, 28 '(not illustrated in FIG. 4).
- the recesses 30 are arranged, which have radial dimensions which are greater than the radial dimensions of the projections 27, 28 ', so that at that position of the piston upper part 2 relative to the piston lower part 6, in which the projections 27, 28th in the direction of the recesses 30, the cylindrical molding 24 with the projections 27, 28 'can be easily introduced into the opening 16.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Zweiteiliger Kolben für einen Verbrennungsmotor Two-piece piston for an internal combustion engine
Die Erfindung betrifft einen zweiteiligen Kolben für einen Verbrennungsmotor nach dem Oberbegriff des Anspruches 1.The invention relates to a two-part piston for an internal combustion engine according to the preamble of claim 1.
Aus der Patentschrift DE 42 03 384 C2 ist ein aus einem Kobenboden und einem Kolbenhemd bestehender, zweiteiliger Kolben bekannt, bei dem die beiden Teile des Kolbens mittels eines Bajonettverschlusses miteinander verbunden sind. Hierbei ist an den Kolbenboden ein in das Kolbenhemd greifender Hals angeformt, an dessen Ende vier radial nach außen ragende Riegelnasen vorspringen, die in der Verbindungsstellung unter radial nach innen weisende Riegelvorsprünge des Kolbenhemdes greifen. Zur Arretierung der Drehstellung des Bajonettverschlusses ist an den Unterflächen eines jeden Riegelvorsprunges ein Rastvorsprung ausgebildet, der in jeweils eine Rastausnehmung der zugehörigen Riegelnase greift. Nachteilig ist hierbei die Komplexität des Bajonettverschlusses, der zu einer erheblichen Verteuerung des aus dem Stand der Technik bekannten, zweiteiligen Kolbens führt.From the patent DE 42 03 384 C2 a consisting of a Kobenboden and a piston skirt, two-piece piston is known in which the two parts of the piston are connected to each other by means of a bayonet closure. Here, a neck engaging in the piston skirt neck is integrally formed on the piston head, projecting at the end of four radially outwardly projecting locking lugs which engage in the connecting position under radially inwardly directed locking projections of the piston skirt. To lock the rotational position of the bayonet lock a locking projection is formed on the lower surfaces of each locking projection, which engages in each case a recess of the associated locking lug. The disadvantage here is the complexity of the bayonet closure, which leads to a considerable increase in price of the known from the prior art, two-piece piston.
Diesen Nachteil des Standes der Technik zu vermeiden, ist Aufgabe der Erfindung Gelöst wird die Aufgabe mit den im Kennzeichen des Hauptanspruches stehenden Merkmalen. Zweckmäßige Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.To overcome this disadvantage of the prior art, object of the invention is achieved, the task with the standing in the characterizing part of the main claim characteristics. Advantageous embodiments of the invention are the subject of the dependent claims.
Hierbei ist zur Verbindung des Kolbenoberteils mit dem Kolbenunterteil lediglich eine koaxial angeordnete, zylindrische Anformung erforderlich, an deren Ende sich zwei einander gegenüberliegende, hakenförmige, nach radial außen gerichteter Vorsprünge befinden, die bei der Montage der beiden Kolbenteile den Rand einer in das Kolbenunterteil eingearbeiten Öffnung hintergreifen. Dadurch dass die Öffnung in einem elastisch nachgiebigem Bereich des Kolbenunterteils angordnet ist und sich an dem kolbenbodenabgewandten Rand der Öffnung Rastnasen befinden, ergibt sich eine dauerhaft feste Rastverbindung zwischen Kolbenoberteil und Kolbenunterteil.Here, only a coaxially arranged, cylindrical Anformung is required for connecting the upper piston part with the piston, at the end there are two opposing hook-shaped, directed radially outward projections, which in the assembly of the two piston parts the edge of an incorporated into the piston part opening engage behind. Characterized in that the opening is angordnet in an elastically yielding region of the piston lower part and are located on the piston bottom facing away from the edge locking lugs, results in a permanently fixed latching connection between the piston upper part and piston lower part.
Einige Ausführungsbeispiele der Erfindung werden im Folgenden anhand der Zeichnungen beschrieben. Es zeigenSome embodiments of the invention will be described below with reference to the drawings. Show it
Fig. 1 einen zweiteiligen Kolben mit einem Oberteil im Schnitt, das über eine erste Ausgestaltung des erfindungsgemäßen Drehverschlusses mit einem Unterteil des Kolbens verbunden ist,1 shows a two-part piston with an upper part in section, which is connected via a first embodiment of the rotary closure according to the invention with a lower part of the piston,
Fig. 2 einen Schnitt entlang der Linie INI in Fig. 1 , der eine Draufsicht auf eine Öffnung zeigt, die Teil des Drehverschlusses ist,FIG. 2 is a section along the line INI in FIG. 1, showing a plan view of an opening forming part of the rotary closure. FIG.
Fig. 3 den zweiteiligen Kolben im Schnitt, bei dem das Oberteil und das Unterteil über eine weitere Ausgestaltung des Drehverschlusses miteinander verbunden sind, undFig. 3 shows the two-part piston in section, in which the upper part and the lower part are connected to each other via a further embodiment of the rotary closure, and
Fig. 4 einen Teilschnitt durch das Oberteil und das Unterteil des Kolbens, der die Öffnung im Kolbenunterteil zeigt, die Teil des Drehverschlusses ist.Fig. 4 is a partial section through the upper part and the lower part of the piston, showing the opening in the piston lower part, which is part of the rotary closure.
Fig. 1 zeigt in einem aus zwei Hälften bestehenden Schittbild, dessen linke Hälfte in Richtung der Kolbenbolzenachse 12 und dessen rechte Hälfte senkrecht dazu liegt, einen zweiteiligen, gekühlten Kolben 1 , der aus einem Kolbenoberteil 2 mit einem Kolbenboden 13 und aus einem Kolbenunterteil 6 besteht. Das Kolbenoberteil 2 weist eine in den Kolbenboden 13 eingeformte Verbrennungsmulde 3 und auf seiner radialen Außenseite eine Ringwand 4 mit einer Ringpartie 5 auf.Fig. 1 shows in a consisting of two halves Schitt picture whose left half in the direction of the piston pin axis 12 and the right half is perpendicular thereto, a two-part, cooled piston 1, which consists of a piston upper part 2 with a piston head 13 and a piston lower part 6 , The upper piston part 2 has a combustion bowl 3 formed in the piston head 13 and, on its radial outer side, an annular wall 4 with a ring part 5.
Das Kolbenunterteil 6 umfasst einen kastenförmigen Kolbenschaft 7 und zwei damit verbundene Bolzennaben 8 mit je einer Bolzenbohrung 9 zur Aufnahme eines in den Figuren nicht dargestellten Kolbenbolzens. Kolbenbodenseitig wird das Kolbenunterteil 6 von einer Trennwand 14 begrenzt, die nahe der Kolbenachse 15 einen dünnwandigen und elastisch nachgiebigen Trennwandbereich 14' aufweist, in den eine mittig angeordnete Öffnung 16 eingebracht ist, die Element eines Drehverschlusses ist, der das Kolbenoberteil 2 mit dem Kolbenunterteil 6 verbindet.The lower piston part 6 comprises a box-shaped piston shaft 7 and two pin bosses 8 connected thereto, each with a pin bore 9 for receiving a piston pin, not shown in the figures. On the piston crown side, the piston lower part 6 is delimited by a partition wall 14, which has a thin-walled and elastically yielding partition wall region 14 'close to the piston axis 15, into which a centrally disposed opening 16 is introduced, which is an element of a rotary closure which connects the upper piston part 2 with the lower piston part 6.
Auf der dem Kolbenboden 13 abgewandten Unterseite ist radial außen in das Kolbenoberteil 2 ein äußerer Kühlkanal 10, 10' eingeformt, der radial außen von der Ringwand 4 und radial innen teils vom Kolbenboden 13 und teils von einer kolben- bodenseitig auf der Trennwand 14 angebrachten, ringförmigen Tragrippe 17 begrenzt wird, die eine ringförmige Auflage 18 für das Kolbenoberteil 2 bildet.On the underside facing away from the piston bottom 13, an outer cooling channel 10, 10 'is formed radially outward into the upper piston part 2, which is mounted radially on the outside of the annular wall 4 and radially inward of the piston head 13 and partly on the piston wall on the bottom side. annular support rib 17 is limited, which forms an annular support 18 for the piston upper part 2.
Die kolbenbodenabgewandte Unterseite des äußeren Kühlkanales 10 kann, wie es in der linken Hälfte des Schnittbildes gemäß Fig. 1 dargestellt ist, von einer an die Tragrippe 17 angeformten, umlaufenden, scheibenförmigen Abdeckung 19 verschlossen sein. Als weitere Möglichkeit, die Unterseite des Kühlkanals 10' zu verschließen, kann gemäß der rechten Hälfte des in Fig. 1 dargestellten Schnittbildes eine ringförmige Tellerfeder 20 verwendet werden, die unter Vorspannung mit ihrer radialen Innenseite auf einer an der radialen Außenseite der Tragrippe 17 angebrachten, umlaufenden Auflage 21 und mit ihrer radialen Außenseite in einer Ausnehmung 22 anliegt, die in der dem Kolbenboden 13 abgewandten Stirnfläche 23 der Ringwand 4 eingeformt ist. Sowohl die Abdeckung 19 als auch die Tellerfeder 20 weisen in den Figuren nicht dargestellte Ölzu- und Ölablauföffnungen auf, über die Kühlöl in den Kühlkanal 10, 10' ein- und daraus wieder abgeleitet wird.The piston bottom facing away from the bottom of the outer cooling channel 10 may, as shown in the left half of the sectional view of FIG. 1, be closed by an integrally formed on the support rib 17, circumferential disc-shaped cover 19. As a further possibility to close the underside of the cooling channel 10 ', according to the right half of the sectional view shown in FIG. 1, an annular plate spring 20 can be used, which is mounted under prestress with its radial inner side on a on the radial outer side of the support rib 17, circulating support 21 and rests with its radial outer side in a recess 22 which is formed in the piston bottom 13 facing away from the end face 23 of the annular wall 4. Both the cover 19 and the plate spring 20 have in the figures, not shown Ölzu- and oil drain holes on the cooling oil in the cooling channel 10, 10 'on and is derived again.
Zur Verbesserung der Kühlwirkung des durch den Kühlkanal 10 fließenden Öles kann die Oberseite des Kühlkanals 10 Kühlrippen 25 aufweisen, wie in der linken Hälfte des Schnittbildes dargestellt ist. Weiterhin ist es möglich, die Kühlwirkung des durch den Kühlkanal 10' fließenden Kühlöles dadurch zu verbessern, dass in der Oberseite des Kühlkanals 10' Bohrungen 26 eingebracht sind, wie die rechte Hälfte des Schnittbildes gemäß Fig. 1 zeigt.To improve the cooling effect of the oil flowing through the cooling channel 10, the upper side of the cooling channel 10 may have cooling fins 25, as shown in the left half of the sectional view. Furthermore, it is possible to improve the cooling effect of flowing through the cooling channel 10 'cooling oil, characterized in that in the top of the cooling channel 10' holes 26 are introduced, as the right half of the sectional view of FIG. 1 shows.
Nach radial innen schließt sich an die Tragrippe 17 ein innerer Kühlkanal 11 an, dessen Oberseite vom Kolbenboden 13 und dessen Unterseite vom Trennwandbereich 14' gebildet werden. Radial außen wird der innere Kühlkanal 1 1 von der Tragrippe 17 und radial innen von einer koaxial zur Kolbenachse 15 liegenden, zylindrische Anformung 24 begrenzt, die an die Unterseite des Kolbenbodens 13 angeformt ist. Zwischen dem äußeren Kühlkanal 10, 10' und dem inneren Kühlkanal 11 sind in den Figuren nicht dargestellte Überlaufkanäle angeordnet, über die das Kühlöl vom äußeren in den inneren Kühlkanal geleitet wird. Das im inneren Kühlkanal 1 1 befindliche Kühlöl wird über die Öffnung 16 in das Kolbeninnere ausgeleitet.After radially inward, the support rib 17 is adjoined by an inner cooling channel 11, the upper side of which is from the piston bottom 13 and the underside of the partition wall region 14 'are formed. Radially outwardly, the inner cooling channel 1 1 of the support rib 17 and radially inwardly of a coaxial with the piston axis 15 lying, cylindrical Anformung 24 is limited, which is integrally formed on the underside of the piston head 13. Between the outer cooling channel 10, 10 'and the inner cooling channel 11 not shown in the figures overflow channels are arranged, via which the cooling oil is passed from the outer into the inner cooling channel. The cooling oil located in the inner cooling channel 1 1 is discharged through the opening 16 in the piston interior.
An dem dem Kolbenboden 13 abgewandte Ende der zylindrische Anformung 24 sind zwei einander gegenüberliegende, nach radial außen gerichtete, hakenförmige Vorsprünge angebracht, die als hakenförmige Anformungen 27 an der zylindrische Anformung 24 ausgebildet sind und zur Befestigung des Kolbenoberteiles 2 an dem Kolbenunterteil 6 den Rand der Öffnung 16 in der Art eines Drehverschlusses hintergreifen. Sichtbar ist in Fig. 1 nur die linke der beiden Anformungen 27, da die rechte Hälfte von Fig.1 einen senkrecht zur Schnittebene der linke Hälfte von Fig. 1 liegenden Schnitt zeigt, sodass hier der Vorsprung 27 in Blickrichtung hinter der zylindrischen Anformung 24 angeordnet ist und von ihr verdeckt wird. Wie weiter unten näher erläutert wird, trägt hierbei die Elastizität des inneren Trennwandbereiches 14' zur Festigkeit dieses Drehverschlusses bei.At the end facing away from the piston bottom 13 of the cylindrical Anformung 24 two opposing, radially outwardly directed, hook-shaped projections are attached, which are formed as hook-shaped projections 27 on the cylindrical Anformung 24 and for fixing the piston upper part 2 on the piston lower part 6 the edge of Behind opening 16 in the manner of a rotary closure. Only the left of the two projections 27 is visible in FIG. 1, since the right half of FIG. 1 shows a section perpendicular to the section plane of the left half of FIG. 1, so that here the projection 27 is arranged behind the cylindrical projection 24 in the viewing direction is and is hidden by her. As will be explained in more detail below, the elasticity of the inner partition wall region 14 'contributes to the strength of this rotary closure.
Der in Fig. 2 dargestellte Schnitt entlang der Linie H-Il in Fig. 1 zeigt eine Draufsicht auf die in den Trennwandbereich 14' eingeformte Öffnung 16, die, wie auch in Fig. 1 angedeutet ist, zwei einander gegenüberliegende Ausnehmungen 30 aufweist. Dargestellt sind auch die zylindische Anformung 24 im Schnitt und die am kolbenboden- abgewanden Ende der Anformung 24 angeordneten, hakenförmigen Anformungen 27 teils in Draufsicht und teils gestrichelt. In Fig. 2 sind diese in einer Stellung eingezeichnet, in der sie den Rand der Öffnung 16 hintergreifen. Bei der Montage der Kolbenoberteils 2 auf das Kolbenunterteil 6 haben beide Teile 2, 6 eine Stellung zueinander einzunehmen, bei der die hakenförmigen Anformungen 27 um 90° gegenüber der in Fig. 2 gezeigten Stellung verdreht sind, sodass sie durch die Ausnehmungen 30 hindurchgeführt werden können. Ist dadurch das Kolbenoberteil 2 in Anlage an die Auflage 18 des Kolbenunterteils 6 gelangt, und sind dabei die hakenförmigen Anformungen 27 weit genug in die Öffnung 16 eingeführt wird das Kolbenoberteil 2 um 90° gedreht, und die hakenförmigen Anformungen 27 nehmen die in Fig. 2 gezeigte Position ein, in der sie den Rand der Öffnung 16 hintergreifen und damit das Kolbenoberteil 2 mit dem Kolbenunterteil 6 verbinden.1 shows a plan view of the opening 16 formed in the partition wall region 14 ', which, as also indicated in FIG. 1, has two mutually opposite recesses 30. Shown are also the cylindrical Anformung 24 in section and the piston bottom-mounted end of the Anformung 24 arranged hook-shaped projections 27 partly in plan view and partly dashed. In Fig. 2, these are located in a position in which they engage behind the edge of the opening 16. When mounting the upper piston part 2 on the lower piston part 6, both parts 2, 6 have a position to each other, in which the hook-shaped projections 27 are rotated by 90 ° relative to the position shown in FIG. 2, so that they can be passed through the recesses 30 , Is characterized the piston upper part 2 in Attachment to the support 18 of the piston lower part 6 passes, and are the hook-shaped projections 27 inserted far enough into the opening 16, the piston upper part 2 is rotated by 90 °, and the hook-shaped projections 27 take the position shown in FIG. 2, in the they engage behind the edge of the opening 16 and thus connect the upper piston part 2 with the lower piston part 6.
Fig. 3 zeigt eine weitere Ausgestaltung des Drehverschlusses, wobei an dem dem Kolbenboden 13 abgewandten Ende der zylindrische Anformung 24 zwei einander gegenüberliegende Vorsprünge 28' angebracht sind, die von einem Passstift 28 gebildet werden, der in einer durchgehenden Bohrung im kugelförmigen Ende 24' der zylindrischen Anformung 24 angeordnet ist und die Vorsprünge 28' bildend beidseitig über die Bohrung hinausragt. Die Vorsprünge 28' hintergreifen hierbei den Rand der Öffnung 16, wenn der Kolben 1 fertig montiert ist. Wegen der gewählten Darstellungsform, bei der die rechte Hälfte von Fig. 3 einen Schnitt zeigt, der senkrecht zum Halbschnitt der linken Hälfte von Fig. 3 liegt, ist in der linken Hälfte von Fig 3 der Passstift 28 in Seitenansicht und in der rechten Hälfte von Fig. 3 im Querschnitt gezeigt.Fig. 3 shows a further embodiment of the rotary closure, wherein at the end facing away from the piston bottom 13 of the cylindrical Anformung 24 two opposing projections 28 'are mounted, which are formed by a dowel pin 28 in a through hole in the spherical end 24' of cylindrical Anformung 24 is arranged and the projections 28 'forming on both sides protrudes beyond the bore. The projections 28 'engage behind the edge of the opening 16 when the piston 1 is fully assembled. Because of the selected form of representation, in which the right half of FIG. 3 shows a section which is perpendicular to the half-section of the left half of Fig. 3, in the left half of Fig. 3, the dowel pin 28 in side view and in the right half of Fig. 3 shown in cross section.
Fig. 4 zeigt in einem vergrößerten Teilschnitt die Öffnung 16, deren unterer Rand als Führung 29 für die in Fig. 4 nicht dargestellten Vorsprünge 27, 28' ausgebildet ist. Auf beiden Seiten der Öffnung 16 sind die Ausnehmungen 30 angeordnet, die radiale Abmessungen aufweisen, die größer als die radialen Abmessungen der Vorsprünge 27, 28' sind, sodass bei derjenigen Position des Kolbenoberteils 2 gegenüber dem Kolbenunterteil 6, bei der die Vorsprünge 27, 28" in Richtung der Ausnehmungen 30 weisen, die zylindrische Anformung 24 mit den Vorsprüngen 27, 28' problemlos in die Öffnung 16 eingeführt werden kann. Im Anschluss daran wird das Kolbenoberteil 2 gedreht, sodass die Vorsprünge 27, 28' gezwungen sind, zwei radial einander gegenüberliegende Rastnasen 31 , 31 ' von den auf beiden Seiten der Ausnehmungen 30 angeordneten Rastnasen 31, 31 ' zu überwinden, wobei der inneren Trennwandbereiches 14' kurzzeitig in Richtung Kolbenboden 13 ausgelenkt wird. Die Rastπasen 31 , 31 ' dienen hierbei als Sicherung gegen ein Lösen des Drehverschlusses.4 shows, in an enlarged partial section, the opening 16, the lower edge of which is designed as a guide 29 for the projections 27, 28 '(not illustrated in FIG. 4). On both sides of the opening 16, the recesses 30 are arranged, which have radial dimensions which are greater than the radial dimensions of the projections 27, 28 ', so that at that position of the piston upper part 2 relative to the piston lower part 6, in which the projections 27, 28th in the direction of the recesses 30, the cylindrical molding 24 with the projections 27, 28 'can be easily introduced into the opening 16. Subsequently, the piston top 2 is rotated, so that the projections 27, 28' are forced, two radially to each other opposite latching lugs 31, 31 'of the arranged on both sides of the recesses 30 locking lugs 31, 31' overcome, the inner partition wall portion 14 'is briefly deflected in the direction of the piston head 13. Die Rastπasen 31, 31 'serve here as a safeguard against loosening the rotary closure.
Bei einer weiteren Drehung des Kolbenoberteils 2 gelangen die Vorsprünge 27, 28' in Kontakt mit dem zwischen den Rastnasen 31 , 3V liegenden Bereich 32 der Führung 29, der eine Auflage 33 mit der Dicke "x" aufweist, die geringer als das maximale, axiale Maß des Rastnasen 31 , 31 ' ist. Hierbei wird durch die Auflage 33 erreicht, dass der Trennwandbereich 14' dauerhaft um den Betrag "x" in Richtung Kolbenboden 13 ausgelenkt wird, was auf die zylindrische Anformung 24 und damit auf das Kolbenoberteil 2 eine dauerhafte Vorspannung ausübt, die eine sehr gute Festigkeit des erfindungsgemäßen Drehverschlusses bewirkt. Upon further rotation of the upper piston part 2, the projections 27, 28 'come into contact with the region 32 of the guide 29 lying between the latching lugs 31, 3V, which has a support 33 with the thickness "x", which is smaller than the maximum, axial Dimension of the locking lugs 31, 31 'is. This is achieved by the support 33, that the partition wall portion 14 'permanently deflected by the amount "x" in the direction of the piston head 13, which exerts on the cylindrical Anformung 24 and thus on the upper piston 2 a permanent bias, which has a very good strength of rotary closure according to the invention causes.
BezuαszeichenlisteLIST OF REFERENCE NUMERALS
X Dicke der Auflage 33X Thickness of the overlay 33
1 Kolben1 piston
2 Kolbenoberteil2 piston upper part
3 Verbrennungsmulde3 combustion bowl
4 Ringwand4 ring wall
5 Ringpartie5 ring game
6 Kolbenunterteil6 piston lower part
7 Kolbenschaft7 piston shaft
8 Bolzennabe8 pin hub
9 Bolzenbohrung9 pin hole
10, 10' äußerer Kühlkana!10, 10 'outside Kühlkana!
1 1 innerer Kühlkanal1 1 inner cooling channel
12 Kolbenbolzenachse12 piston pin axis
13 Kolbenboden13 piston bottom
14 Trennwand14 partition wall
14' Trennwandbereich14 'partition wall area
15 Kolbenachse15 piston axis
16 Öffnung16 opening
17 Tragrippe17 support rib
18 Auflage18 edition
19 Abdeckung19 cover
20 Tellerfeder20 plate spring
21 Auflage21 edition
22 Ausnehmung22 recess
23 Stirnfläche der Ringwand 423 end face of the annular wall. 4
24 zylindrische Anformung24 cylindrical molding
24' kugelförmiges Ende der Anformung 2424 'spherical end of the Anformung 24th
25 Kühlrippe25 cooling rib
26 Bohrung Vorsprung, hakenförmige Anformung Passstift ' Vorsprung des Passstiftes 28 Führung Ausnehmung ,31 ' Rastnase Bereich der Führung 29 Auflage 26 hole Projection, hook-shaped projection Pass pin 'projection of the dowel pin 28 guide recess, 31' latching nose portion of the guide 29 edition
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007544727A JP2008523290A (en) | 2004-12-08 | 2005-11-28 | Two-part piston for internal combustion engines |
| US11/792,659 US7946216B2 (en) | 2004-12-08 | 2005-11-28 | Two-part piston for an internal combustion engine |
| DE502005005495T DE502005005495D1 (en) | 2004-12-08 | 2005-11-28 | TWO-PIECE PISTON FOR A COMBUSTION ENGINE |
| BRPI0518609-9A BRPI0518609A2 (en) | 2004-12-08 | 2005-11-28 | two-section combustion engine piston |
| EP05820654A EP1859155B1 (en) | 2004-12-08 | 2005-11-28 | Two-piece piston for an internal combustion engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004058968A DE102004058968A1 (en) | 2004-12-08 | 2004-12-08 | Two-piece piston for an internal combustion engine |
| DE102004058968.2 | 2004-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006060987A1 true WO2006060987A1 (en) | 2006-06-15 |
Family
ID=36061455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2005/002137 Ceased WO2006060987A1 (en) | 2004-12-08 | 2005-11-28 | Two-piece piston for an internal combustion engine |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7946216B2 (en) |
| EP (1) | EP1859155B1 (en) |
| JP (1) | JP2008523290A (en) |
| KR (1) | KR20070090909A (en) |
| CN (1) | CN100535424C (en) |
| BR (1) | BRPI0518609A2 (en) |
| DE (2) | DE102004058968A1 (en) |
| ES (1) | ES2315938T3 (en) |
| WO (1) | WO2006060987A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7762178B2 (en) * | 2007-06-13 | 2010-07-27 | Mahle International Gmbh | Two-part piston for an internal combustion engine |
| WO2010099372A3 (en) * | 2009-02-27 | 2011-01-06 | Federal-Mogul Corporation | Piston with central directional oil flow and wrist pin lubrication feature and method of construction thereof |
| DE102011106554A1 (en) | 2011-07-05 | 2013-01-10 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
| WO2013004216A1 (en) | 2011-07-05 | 2013-01-10 | Mahle International Gmbh | Piston for an internal combustion engine and method for the production thereof |
| US8973484B2 (en) | 2011-07-01 | 2015-03-10 | Mahle Industries Inc. | Piston with cooling gallery |
| US9856820B2 (en) | 2010-10-05 | 2018-01-02 | Mahle International Gmbh | Piston assembly |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8171842B2 (en) * | 2007-06-20 | 2012-05-08 | Mahle International Gmbh | Two-piece twist lock piston |
| DE602007013219D1 (en) * | 2007-08-24 | 2011-04-28 | Thyssenkrupp Metalurgica Campo Limpo Ltda | Piston for an internal combustion engine and method for producing such a piston |
| DE102007061601A1 (en) * | 2007-12-20 | 2009-06-25 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
| DE102008055909A1 (en) * | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Multi-part piston for an internal combustion engine |
| WO2014059221A1 (en) * | 2012-10-12 | 2014-04-17 | Mahle International Gmbh | Piston with cooling gallery and cooling gallery fins |
| US9291119B2 (en) * | 2013-03-14 | 2016-03-22 | Mahle International Gmbh | Piston assembly with preloaded support surfaces |
| DE102014000253A1 (en) * | 2014-01-08 | 2015-07-09 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
| CN107002593B (en) * | 2014-12-02 | 2020-01-24 | 日立汽车系统株式会社 | Piston for internal combustion engine, and apparatus and method for manufacturing the piston |
| CN105756801A (en) * | 2016-01-29 | 2016-07-13 | 马勒技术投资(中国）有限公司 | Gasoline engine piston adapting to high detonation pressure and containing double-cast-iron ring and inner-cooling oil duct |
| DE102016224280A1 (en) * | 2016-06-02 | 2017-12-07 | Mahle International Gmbh | Piston of an internal combustion engine |
| DE102017207005A1 (en) * | 2017-04-26 | 2018-10-31 | Federal-Mogul Nürnberg GmbH | One-piece, cast piston for an internal combustion engine |
| CN107387253A (en) * | 2017-09-05 | 2017-11-24 | 湖南江滨机器（集团）有限责任公司 | A kind of piston and its manufacture method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2051547A (en) * | 1934-03-05 | 1936-08-18 | Cleveland Graphite Bronze Co | Piston |
| DE4203384A1 (en) * | 1992-02-06 | 1993-08-19 | Hunger Walter | Two=part piston esp. for IC engine - has elastically deformable piston ring between piston base and skirt |
| DE19815989A1 (en) * | 1998-04-09 | 1999-10-21 | Uti Holding & Man Ag | Piston-cylinder assembly e.g. for an ic engine |
| DE10116084A1 (en) * | 2001-03-30 | 2002-10-10 | Mozzi Andreas | Engine with separate piston crown |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1789570A (en) * | 1925-11-05 | 1931-01-20 | Perfect Circle Co | Piston and piston ring |
| US2409852A (en) * | 1945-03-19 | 1946-10-22 | John L Harrah | Piston for internal-combustion engines |
| US2638080A (en) * | 1950-05-15 | 1953-05-12 | Pielstick Gustav | Piston cooling for internalcombustion engines |
| JPS54163208A (en) * | 1978-06-15 | 1979-12-25 | Toyota Motor Co Ltd | Builttup piston for engine |
| CN2138701Y (en) * | 1992-10-08 | 1993-07-21 | 铁道部大连机车车辆工厂 | Steel top iron skirt combined piston of diesel engine |
| DE4308751A1 (en) * | 1993-03-19 | 1994-09-22 | Kolbenschmidt Ag | Piston-connecting rod arrangement for internal combustion engines |
| DE10042422C1 (en) * | 2000-08-30 | 2002-04-04 | Andreas Mozzi | Split piston and piston crown retaining spring |
| DE20220644U1 (en) * | 2002-09-20 | 2003-12-04 | Graul, Niklas-Simon | Device for filling sand bags comprises on a continuous conveying system holding devices, spreading devices, control devices for controlling a dosing device, and optionally filling weight-testing devices, closing devices and ejecting devices |
-
2004
- 2004-12-08 DE DE102004058968A patent/DE102004058968A1/en not_active Withdrawn
-
2005
- 2005-11-28 WO PCT/DE2005/002137 patent/WO2006060987A1/en not_active Ceased
- 2005-11-28 US US11/792,659 patent/US7946216B2/en not_active Expired - Fee Related
- 2005-11-28 ES ES05820654T patent/ES2315938T3/en not_active Expired - Lifetime
- 2005-11-28 BR BRPI0518609-9A patent/BRPI0518609A2/en not_active IP Right Cessation
- 2005-11-28 DE DE502005005495T patent/DE502005005495D1/en not_active Expired - Lifetime
- 2005-11-28 EP EP05820654A patent/EP1859155B1/en not_active Expired - Lifetime
- 2005-11-28 JP JP2007544727A patent/JP2008523290A/en active Pending
- 2005-11-28 CN CNB2005800419989A patent/CN100535424C/en not_active Expired - Fee Related
- 2005-11-28 KR KR1020077012980A patent/KR20070090909A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2051547A (en) * | 1934-03-05 | 1936-08-18 | Cleveland Graphite Bronze Co | Piston |
| DE4203384A1 (en) * | 1992-02-06 | 1993-08-19 | Hunger Walter | Two=part piston esp. for IC engine - has elastically deformable piston ring between piston base and skirt |
| DE19815989A1 (en) * | 1998-04-09 | 1999-10-21 | Uti Holding & Man Ag | Piston-cylinder assembly e.g. for an ic engine |
| DE10116084A1 (en) * | 2001-03-30 | 2002-10-10 | Mozzi Andreas | Engine with separate piston crown |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7762178B2 (en) * | 2007-06-13 | 2010-07-27 | Mahle International Gmbh | Two-part piston for an internal combustion engine |
| JP2010529357A (en) * | 2007-06-13 | 2010-08-26 | マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | Two-part piston used in internal combustion engines |
| WO2010099372A3 (en) * | 2009-02-27 | 2011-01-06 | Federal-Mogul Corporation | Piston with central directional oil flow and wrist pin lubrication feature and method of construction thereof |
| US8616114B2 (en) | 2009-02-27 | 2013-12-31 | Federal-Mogul Corporation | Piston with central directional oil flow and wrist pin lubrication feature and method of construction thereof |
| US9856820B2 (en) | 2010-10-05 | 2018-01-02 | Mahle International Gmbh | Piston assembly |
| US8973484B2 (en) | 2011-07-01 | 2015-03-10 | Mahle Industries Inc. | Piston with cooling gallery |
| DE102011106554A1 (en) | 2011-07-05 | 2013-01-10 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
| WO2013004216A1 (en) | 2011-07-05 | 2013-01-10 | Mahle International Gmbh | Piston for an internal combustion engine and method for the production thereof |
| WO2013004219A1 (en) | 2011-07-05 | 2013-01-10 | Mahle International Gmbh | Piston for an internal combustion engine and method for the production thereof |
| DE102011106556A1 (en) | 2011-07-05 | 2013-01-10 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101091052A (en) | 2007-12-19 |
| US7946216B2 (en) | 2011-05-24 |
| DE102004058968A1 (en) | 2006-06-14 |
| US20070289568A1 (en) | 2007-12-20 |
| JP2008523290A (en) | 2008-07-03 |
| BRPI0518609A2 (en) | 2008-11-25 |
| CN100535424C (en) | 2009-09-02 |
| ES2315938T3 (en) | 2009-04-01 |
| KR20070090909A (en) | 2007-09-06 |
| DE502005005495D1 (en) | 2008-11-06 |
| EP1859155B1 (en) | 2008-09-24 |
| EP1859155A1 (en) | 2007-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1859155B1 (en) | Two-piece piston for an internal combustion engine | |
| EP1363743B1 (en) | Shower head | |
| DE69326703T2 (en) | Single lever mixer valve cartridge for hot and cold water | |
| DE102005042212B4 (en) | Sanitary installation part | |
| DE19903078A1 (en) | Can for centrifugal pump | |
| EP1828587A1 (en) | Multipart, cooled piston for a combustion engine | |
| DE112012006016T5 (en) | presser | |
| DE602004011811T2 (en) | COOLING CHANNEL COVER FOR ONE PIECE PISTON OF A COMBUSTION ENGINE | |
| DE102007008372B4 (en) | Assembly unit and fastener unit | |
| EP0496227B1 (en) | Valve top | |
| WO2007118613A1 (en) | Liquid container | |
| DE102014015947A1 (en) | Cooling duct cover and piston provided with a cooling channel cover | |
| DE1989633U (en) | LOCKING ARRANGEMENT FOR THE BEARING HOUSING OF A CROSS-ROLLED BEARING WITH A SPHERICAL CURVED SURFACE. | |
| DE112016003371C5 (en) | Joint arrangement and rotary damper | |
| DE102007028716A1 (en) | Hydraulic tensioning element for a traction mechanism drive | |
| DE3725825C2 (en) | ||
| DE102011075571A1 (en) | Mounting device for use in basic construction, comprises mounting piece, which is penetrated into hole, spacer sleeve held captive in hole, and head extends beyond shaft | |
| EP3985266A1 (en) | Lid with closure | |
| DE102006045728A1 (en) | Single-piece piston for internal combustion engine, has semicircular unit with lower region lying region of shaft unit on shoulder of shaft unit and at region of front side of bolt bosses respectively on projection of boss connection | |
| DE102010005117B4 (en) | Check valve for an internal combustion engine and method for producing such a check valve | |
| EP3953592A1 (en) | Circlip, arrangement and method for installing the circlip | |
| WO2005008087A1 (en) | Shoulder-type ball bearing or angular contact ball bearing | |
| DE4102451A1 (en) | Sectioned ring for shaft immobilisation against axial displacement - is snapped into groove between two flanges with which cheeks of inner section enter into contact | |
| DE102008062218A1 (en) | Piston for internal combustion engine, has wire guided into circulating channel over feed channel exhibiting same cross section as circulating channel, where feed channel passes from outer surface of lug to circulating channel | |
| DE102016115506B4 (en) | Annular filter component with a snap lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 200580041998.9 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2007544727 Country of ref document: JP Ref document number: 1020077012980 Country of ref document: KR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2005820654 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 11792659 Country of ref document: US |
|
| WWP | Wipo information: published in national office |
Ref document number: 2005820654 Country of ref document: EP |
|
| WWP | Wipo information: published in national office |
Ref document number: 11792659 Country of ref document: US |
|
| WWG | Wipo information: grant in national office |
Ref document number: 2005820654 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: PI0518609 Country of ref document: BR |